We've seen plenty of pauses and breaks in the action in Oscar Pistorius' murder trial so far, and it looks like there's a chance we'll see an even bigger delay soon.

Prosecutor Gerrie Nel filed a motion in court today and argued the paralympian should be forced to undergo a 30-day psychiatric evaluation to make sure his mental health wasn't a factor in the shooting of Reeva Steenkamp.

This came after psychiatrist Merryll Vorster testified today and yesterday and went into great detail on how Oscar's past could have affected his mental state up to this point.

She started at his childhood, saying he could have viewed the amputation of his legs as "traumatic assault" since he was too young to have any control over the situation at just 11-months old.

Merryll then spoke about the divorce of his parents and how he was essentially raised by his mother, who sometimes abused alcohol and put enormous pressure on Oscar to live a "normal" life.

Oscar has been suffering from depression ever since shooting Reeva on Valentine's Day last year, and Gerrie argues the possibly affects on his mental state can not be ignored.

The former sprinter's attorneys seem to think otherwise, however, the decision ultimately lies on Judge Thokozile Masipa, who will decide tomorrow whether or not a psychiatric evaluation is necessary.

"My metabolism actually changed like crazy this year. I have Hashimoto's disease. It's a thyroid disease, and it's now been two years since taking the medication for it, so for the VS show I didn't want to lose any more weight, I just want to have muscles in the right place, and if my butt can get a little perkier, then that's good."